The solar system is composed of the sun, eight major planets, five dwarf planets, over a hundred moons, and countless comets ...

According to NASA, the planetary phenomenon will be clearest about 45 minutes before sunrise, low in the eastern sky and appearing near the moon. Venus and Saturn will be the easiest to spot — but for ...

Skywatchers will witness a rare event as the Moon, Mars, and Mercury appear close together in the twilight sky this October.

CAPE CANAVERAL, Fla. -- A NASA spacecraft has confirmed there's ice at Mercury's north pole. Scientists announced Thursday that the orbiting probe, Messenger, has found evidence of frozen water, even ...

NASA’s Mercury-bound Messenger spacecraft dropped into orbit around the tiny, orbitally eccentric planet just a few months ago, and it’s already sent back enough data to notably alter our take on the ...

Alongside a crescent moon, Mercury, Venus and Saturn will become visible to stargazers just before dawn on Friday morning. According to NASA, the planetary phenomenon will be clearest about 45 minutes ...